Folding machine



S. J. CAMPBELL April 1, 1930.

FOLDING MACHINE Filed Feb. 6. 1929 4 Sheets-Sheet INVENTQR 6 eid Ufigpbeli ATTORNEYI 1930. 5. J. CAMPBELL April 1 FOLDING MACHINE Filed Feb. 6, 1929 4 Sheets-Sheet INVENTOR daiizald ATTORNEY April 1, 1930- s. J. CAMPBELL v 1,752,415

FOLDING MACHINE Filed Feb. 6, 1929 4 Sheets-Sheet 3 INVENTQR A TTORNEY April 1, 1930. I s. J. CAMPBELL FOLDING MACHINE Filed Feb. 6, .1929

4 Sheets-Sheet 4 mmvrox aamaelfiampeil BY Z a ATTORNEY Patented Apr. 1, 1930 UNITED STATES.

PATENT. OFFICE suntan J. CAMPBELL, OI GREEN BAY, WISCONSIN, ASSIGNOR TO Bunsen-smear "MACHINE COMPANY, CORPORATION OF WISCONSIN f ronnrne macnmn Application flled-=February 8, 1929. 'Ser1a1 no. 337,752;

This invention relates to improvements in folding machines,-of which the following is a specification:

' The machine of the present invention is designed primarily for the folding of paper napkins into what is known in the trade as the cornucopia'fold, and the arrangement of the foldin blades is so as to provide for a fold of this character. The material, tissue paper or the like, is fed in a continuous web as a whole and to the constituent or roll to the machine of the present invention and is first folded longitudinally or in line with its advance, after which it is delivered to cutting rolls which sever from the advancing web a length of folded material sufiicient to constitute a rectangular article such as a napkin or the like. At the time the material is cut from the web, it will be once folded and the fold of two-ply material will be of a length equal to twice the width of the folded strip. The first folding blade then advances and initiates a fold crosswise of the cut-01f two-ply strip which results in a folding of the latter into a four-ply square folded section. It is necessary in order to fold this square fourly section into the cornucopia shape to fol the square section inwardly along diagonal folding lines from opposite sides, and in order to secure thesediagonally extending folds, provision is made for swinging or turning the section as it advances through the rollers so that it will fold on oblique rather than transverse lines. To secure this result, the feeding rollers are made in sections which were rotated at differential speed so that one side of the folded blank will be advanced more rapidly than the other and the present invention relates primarily to the construction and arrangement of these feeding rollers, and to the combination of such rollers with the folding blades in such way as to secure the end in view. I

The invention also relates to the provision of guide belts running in conjunction with the rollers to assist in the feeding and ultimate delivery of the articles and to the general construction and arrangement of the machine parts thereof. In the drawings: a Figure l is a side elevation of the machine of -the present invention, showing in dotted lines the general arrangement of the rollers and folding blades and their relation to one another.

Figure 2 is'a diagrammatic view showing the foldmg blades in position to act upon the pro ected end of a sheet or strip of paper at the moment of severance and prior to the making of the first cross fold.

Figure 3 is a similar view with the paper sheet omittedand indicating in dotted lines the, operation of the second folding blade in making the second fold.

Figure 4 is a lan view of the rollers take on line 44 of igure 3.

Figure 5 is a figure similar to Figures 2 and 3 illustrating the operation of the third folding blade.

Figure 6,is a view taken on line 6-6 of Fi ure 5. r

igure 7 is aview looking downwardly upon the center feeding roll in the act of delivering the napkin in its finally folded form.

And Figure 8 is a sectional on line 88 of Figure 3. Y The machine as a whole comprises a suitable or adequate framework which, in the form shown, comprises end plates or sections 10, mounted upon legs 11. A folder or former 12.0f the character commonly em loyed in printing presses for longitudinally olding a web of paper is suitably supported above the machine and over this former, the continuous web travels in delivering the web in longitudinally folded condition to aair of cutting rolls 13 and 14, the former 0 which may be considered as the male cutting roller and the latter of which as the female cutting a knives reach the point of severance, which is the-condition indicated in Figure 2. The

upon shafts 26 and 27 respectively. These:

rollers 24 and are of special or peculiar construction and consist, in each case, of 1nnerand outer sections, the latter of which rotate at greater speed than the former, to the end that, as the twice folded napkin passes through the rollers, it will be swung or skewed around as indicated in Figure 4 in preparation for the next fold which must be alon an oblique line in order to conform to the u timatd-folding of the napkin into cornucopia form. The roller 25 in addition to its co-operation with the overlying roller 24, cooperates with a horizontally adjacent roller 28 and also with an underl lng roller 29, and since the rollers 24, 25 and 28 are all of the sectional formation above referred to a deiifiption of one will, in the main suflice for By referring to Fi ure 4, it will be noted that the machine is o? duplicate construction and that the rollers are of a length to simultaneously fold two strips or webs of paper but since this is a matter of mere duplication, it is not deemed necessary to describe each end of each of the rollers, since a description of one end will suffice for both. The roller 25"comprises an inner or slow moving section 30, which is integrally formed with or rigidly mounted upon the shaft 27 Outwardly adjacent the slow section 30 is located a fastsection 31 which surrounds the shaft and is freely rotatable thereon. The section 31'has rotatably or freely mounted thereon a ring 32 provided with a groove 33 adapted to receive a belt 34. Immediately adjacentto the ring 32, the fast section is provided with a pair of circumferential ribs or ridges 34. The slow section is likewise provided with a groove 35 and a pair of adjacent ribs 36 located near the center of the roller. The groove 35 isprovided to receive a belt 37 (see Fig. 8) which belt corresponds in its line of travel to the belt 34.

The roller 24 is constructed in precisely the same manner to afford a fast section and a slow section and similar provision is made for the mountin of a pair of belts 37 The roller 28 is in all respects similar to the roller 25 save in the matter of size, the roller 28bein of smaller diameter and in the case of the ro er 28 similar provision is made for the mounting of a pair of belts 38, which are mounted in grooves 39 and-40 respectively. The slowsection of the roller 28 is provided with a single rib or ridge 41 which stands in staggered relation to the ribs 37 and similarly the fast section of the roller 28 is provided with a single rib 42 which stands in staggered relation to the ribs 34. The manner in which the rollers 25 and 28 are constructed andmounted is best illustrated, in Figure 8. The shaft 27, which is formed rigidly with the slow section 30 of the roller, passes freely through the fast section 31 and has keyed thereon-a spur pinion 43 which, in turn, meshes with a spur pinion 44 which is bolted or otherwise rigidly secured to the fast section of the roller 28. The spur pinion 44 is of lesser diameter than the pinion 43 and is freely mounted upon the shaft 45 which is rigid with the slow section of the roller 28. Each of'the fast sections of each of the two rollers is provided with a spur pinion 46 which, in each instance, is of the same pitch diameter as the roller to which it is attached.)

These two spur pinions mesh with one another and maintain a uniform peripheral speed between the two fast roller sections. The shafts 27 and 45 are provided with inter-meshing spur pinions 4748 which, in each instance, are formed to have a pitch diameter equal or proportionate to the diameters of the respective rollers so that the slow sections of each of the two rollers will run at the same peripheral speed.

As a result of the construction and arrangement above described, the slow sections of the co-operating rollers will be positively driven by the inter-meshing gearing at the same peripheral speed. The rotation of the shaft 27 which carries the keyed or splined pinion 43 will impart an increased speed of rotation to the fast section of the roller 28, and this increased rotation will, in turn, be imparted at the same peripheral speed to the fast section 31 of the roller 25 so that in the operation of the rollers, the coacting inner sections of the two rollers will travel together at a slower rate of speed, and the coacting two outer sections of the same rollers will rotate together at a higher rate of peri heral speed with the result that a section 0 paper fed into the bite of these rollers will be turned or skewed around during the passage therethrough, and this turning or swinging is made possible by the fact that the area of compressive contact against opposite sides of the paper is limited to the ribs or "ridges 36--4l at the inner ends of the slow roller sections and by contact of the ribs or ridges 34 42 at the inner ends of the fast roller sections so that in passing through the rollers, the paper section prevlously folded will swing or pivot around its inner corner as shown in Fig. 6. It will be understood that Fig. 4 particularly illustrates the rollers 25-28, but the same construction, relation and mode of operation is preserved in the construction and mounting of the roller 24 so 4 that in passingbetween the rollers 24 and 25,1,

the folded napkin will bea second time swun or skewed around so that when the final old is given, the napkin will pass out of tlzle machine folded as indicated in Figure In order to produce the fold between the rollers 25-28, the second folder blade or tucker 49 is provided which from above works downwardly toward the bite between these rollers and this tucker blade is notched or slotted at suitable points to clearthe narrow belts 37. v A third folder blade or tucker 50 is provided' which works toward the bite between the rollers 25fand 29 and this folding blade or tucker acts upon the napkin after it has been given the first oblique fold and after it has been turned in position to receive the second oblique fold so that further turning or skewing of the folded napkin, as it passes between the rollers 25 and 29 is undesirable.

For-this reason the lowermost roll 29 is integrallyafo'faned' and is driven as a one-speed fast roll h'a-ving'the same peripheral speed as the slow section of the roll 25. The roll 29 is provided with ribs 51 and 52 which coact with the ribs 36 and 34 respectively, but in view of the fact thatthe roll 29 is a one speed roll, the napkin will not be turned or skewedaround during its final passage between these rolls.

The tucker or folding blade 50 is suitably notched or recesssed to clear the belt 38 and in order to finally guide the folded napkins down to the point where they are stacked, belts 53 are provided which travel within the grooves 35 and 33 in theroller 25 and around and over the periphery of the roller 29, and which carry the folded napkins downwardly behind the edges of guide plates 54 until the napkins are stacked upon a table 55 along which they are fed in any suitable manner to the point of delivery.

Above the rollers 25 and 28, the machine is provided with spaced plates 56 which constitute a slotted table through which the folder blade works and in order to properly gauge the folds,'the blade 56 is provided with an obliquely disposed gauge bar 57, positioned as shown in Fig. 4 whichdimits the outward movement of the twice-folded blank so as to bring it into the desired oblique relation in preparation for the downward movement of the second folder blade. In like manner, spaced plates 58 are provided adjacent the rollers 25 and 29, through which the tucker or folding blade 50 operates, and

in this instance also, obliquely disposed stance with suitable gauge bars '59 are provided for properly gauging the napkins in preparation for the" final fold.

While the present invention is not con eerned with any particular means or mocha: msms for lmparting the necessary move ments to the folding blades or tuckers in proper timed relationship, Fig. 1 serves to illustrate an adequate mechanism appropriate for this purpose. As shown, the shaft 15 60 which carries a long link 61 operating a longer crank 62 mounted'upon a rocklng shaft63, upon which is mounted a tucker arm 64 which carries the folding blade or tucker 50. This arrangement causes a rocking of the shaft 63 and a swinging of the folder blade 50 at proper intervals. The shaft 15, at its opposite end, carries a short crank arm 65 oppositely disposed in relation I has mounted on its outer end a short crank which is mounted upon shaft 71 carrying the 1 long crank 72, which is connected by a link 73 with a short crank 74 mounted upon a shaft 75. The rotation of the shaft 75 serves to rock the shaft 7 liiand with it the tucker arfn and folding blade. The rollers are all driven from the centrally disposed roller 25, the rollers 24 and 29 being provided in each. in-

ears which it is not deemed necessary to ill ustrate in detail. The

lowermost one-speed roll 29 is driven by a pinion 76 which meshes with the fast speed pinion 46 of the centrally disposed two-s eed roller 25 so that the peri heral speed 0 the lowermost roll will be t e same as that of the fast section of the center roll with which it co-operates. a

In operation the once-folded strip or web of paper is fed downwardly past the cutting rolls until the proper length-has been delivered, at which olnt the section is severed and the first fol ing blade advances to initiate a straight cross-fold between the rollers 24-and 25. The napkin thus delivered will be folded down between these rollers along the transverse line initiated by the folding blade and as the napkin passes between-the rolls, it will be skewed around into oblique relation preparatory to the initiating of the first oblique fold which is caused b the downward thrust to the second folding lade. This oblique fold is completed asthe napkin enters between the rollers 25 and 28, and as it passes between these rolls it will be further skewed around or turned in position to receive the final oblique fold which is initiated "by the advance of the third folding blade 50.

In the final passage between the middle roll and the l'lower -roll 29;*the "folded naplrin i will be ifed through 'withoutiurthe turning elementsm at the fastnspeed no to the gear co action betweenithe ffast section oiithe -middle roll and thelowermo'st rroll 29 and in this condition 1 of vthe fold, the contact of the slowsection of v the middleiroll will; be ineffective to retard i1the.:advance;,of the inner or' pointed end of theafoldedina kin si'nce the roller contact at f this endwwill ebutimomentary byreason of "the factrthat the pointed-end ofthegfolded .inapkin' resents but aslightarea of'conta'ct :sol that t 1e vnapkin -will be fed through atits pointed end before is further turned or dis .Whilel "have herein shown and described what i I now consider the preferred manner of carrying ont' my" invention the 7 same is merely illustrative, 1 and a I contemplate 211] :ch'anges and modifications that "come within the scope of the claims appended hereto;

res ectiveroller elements at one rateofspeed,

an meansfor "drivin'g- -other eoacti'ng sec tionsof the respective "roller' elements at La difiejrent speed to'canse a turning or skewing movement of materialfed through the roller elements, and a folder blade 'coacting withthe rollerelements to initiate a fold'in sheets of material fed between the rollerelements 3. In afolding machine, the combination of .coacting roller elements, each roller ele sectionga shaft for each roller e1ement',rigid ly' connected ivith one of the'sections andhav 3 ing the "other section 'journalled thereon,

means forfdriving'the shafts to impart uni-, form ype'ripheral speed "to the sections con nected therewith, and gear elemcnts"intrain, with the other roller sections and} adapted to impart to the last mentioned set of roller sections a peripheral speed difl'erentfrom that of the [first mentioned set of roller s ctions: I

4.; heralding machine; the; combination of eoa'cting roller e ementsyeach teller elementcomprisin'g 'a fastsection and slow section, a shaft for each roller element, rigidly conneeted" ivith: one of, the section's and having theothersec tion joiirnalled thereon; means for driving the shafts to impart uni: f

form peripheral speed tothe sections confnejcted therewith; and garfelements n train with member roller sections. and in train with one? of the shafts, and-adapted to' impart to the-lashmentioned set of rdllersectionsa peripheral speed different from that of the *fir'stfmentionedset'of roller sections. 1 "In it folding machine; the coiiibination coming" roller elements, each roller element comprising a fast" section and lslow section, semis detachroner siemem, rigid- --1y connected with oneof the sections and having the other section journalled thereon,

means for drivingtthe shafts to impartf niform peripheral lspeed to the sections connected therewith," and gear elements in train with the other rollersections and adapted to impart to the lastmentioned set of roller sections a peripheral sp'e'eddifferent from that of the first mentioned set of roller sections.

each set of muerseefion's beingribbed around a confined areatocenter the compressiveacti'on along certain defined lines 'to facilitate the tnrning-orskewing of the sheets of material fed throngh'th'e 'roller elements.

1' '6. Inf'a folding'pmac hine,the combination of c'oa'cting roller element's, each roller ele merit comprising a fast section and a slow sectiomashaft for each roller element,}rigid 1y connected vith one of thesections and having the" otlierfsection journalled thereon, means fordrivingthe shafts to impart uni form peripheral speedto the sections con nectedthere'Withflnd gear elements in train with the other roller sectionsiand in train Witho'n'e of the shafts, and adapted to impart to thejlast mentioned setlof roller sections a,

peripheral speed different from that of the, first mentioned set of roller sections, each set of rollers'ectionsbeingribbed around a confined area toicenter the compressive action along certain definedjlines to facilitate the turning or'skewing of the sheets of material fed through the roller elements. V

1 7. In a foldingmachine, the combination of: coacting roller elements, each, roller element comprising a' fa'stf sectionand a slow sect on, a shaftjfor each roller element, rlgids 1y connected 1 with one .of the L sections and having the other section journalled thereon, means for ,driving the shafts to impart uniform peripheral speed; tothe sections connectedltherewith, and gearelements in train withthefotherj roller sections and adapted to impartto the last] mentioned set of roller sections 'a peripheral speed different from that of thefirst mentioned set of roller sec tions, each setjofroller sections being ribbed around ajcontinedarea to center the compre s- SIYG action along certain defined llnes to, fa-

cilitate the; turning or Showing of the sheets,

of material fedithrongh the" roller elements, and; each of the roller elements being providedivith a continnon s belt tofacilitate t'ceding of'thematerial,

8. In a folding machine, thecombination for driving the shafts to impart uniform peripheral speed ,to the sections connected therewith, and gear elements in train with the other roller sections and in train with one i of the shafts, and adapted to impart to the last mentioned set of roller sections a peripheral speed different from that of-the first mentioned set of roller sections, each set of roller sections being ribbed around a confined area to center the compressive action along certain defined lines tofacilitate the turning or skewing of the sheets of material fed through the roller elements, and each of the roller elements being provided with a.

continuous belt to facilitate feeding of the material.

9. In a folding machine, the combination of coacting roller elements, each roller element comprising a fast section and a slow section, a shaft for each roller element, rigidly connected with one of the sections and having the other section journalled thereon, means for driving the shafts to impart uniform peripheral speed to the sections connected therewith, and gear elements in train with the other roller sections and adapted to impart to the last mentioned set of roller sections a -peripheral speed different from that of the first mentioned set of roller sections, each set of roller sections being ribbed around a confined area to center the compressive action along certain defined lines to facilitate the turning or skewing of the sheets of material fed through the roller elements, and each of the roller elements being provided with a continuous belt to facilitate feeding of the material, one of the roller sections being provided with a freely mounted ring upon which the belt for that section is carried to permit travel of the belt inde endently of the peripheral speed of the rol er section.

10. In a folding machine, the combination of coacting roller elements, each roller element comprising a fast section and a slow section, a shaft for each roller element, rigidly connected with one of the sections and having the other section journalled thereon, means for'driving the shafts to impart uniform peripheral speed to the sections connected therewith, and gear elements in train with the otherroller sections and in train with one of the shafts, and adapted to impart to the last mentioned set of roller sections a peripheral speed different from that of the first mentioned set of roller sections, each set of roller sections being ribbed around a confined area to center the compressive action along certain defined lines to facilitate the turning or skewing of the sheets of material fed through the roller elements, and each of the roller elements being provided with a.

continuous belt to facilitate feeding of the material, one of the roller sections being provided with a freely mounted ring upon which the belt for-that section is carried to permit travel of the belt independently of the peripheral speed of the roller section.

v 11. In a folding machine for folding sheets of material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded Web, an upper roller and a central roller in coacting relation, each of said rollers being provided with a fast section and a slow section, adapted to cause a turning or skewing of the sheets of material while being fed through the rollers, a first folder blade positioned to initiate a cross fold in the first folded cut-off section and to introduce a sheet in four-ply folded condition between the u per and central folding rollers, an intermedlate folding roller coacting with the central roller and consisting of fast and slow sections coacting with the fast and slow sections of the central roller, a second folding blade adapted to initiate an obliquely directed fold in the four- 1y folded material delivered through the rst set of rollers, and to introduce the material thus folded between the sections from the first folded web, an upper roller and a central 'roller in coacting relation, each of said rollers vbeing provided with a fast section and a slow section, adapted to cause a turning or skewing of the sheets of material while being fed through the rollers, a first folder blade positioned to initiate a cross fold inthe first folded cut-off section and to introduce a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller coacting with the central roller and consisting 'of fast and slow sections coacting with the fast and slow sections'of the central roller, a

second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and a third folder blade adapted to initiate a fold in the material delivered from the central and intermediate folding rollers, and belts passing around certain of the rollers to assist in the feeding of the material.

18. In a folding machine for folding sheets of material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded web, an upper roller and a central roller in coacting relation, each of said rollers being provided with a fast section and a slow section, adapted to cause a turning central roller, a second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and a third folder blade adapted to initiate a fold in the material delivered from the central and intermediate folding rollers, the coacting surfaces of the roller pairs which servejto turn or skew the folded material being ribbed throughout confined areas to concentrate the compressive action along certain lines to facilitate the turning or skewing movements.

14. In a folding machine for folding sheets of material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded web, an upper roller and a central roller in coacting relation, each of said rollers being provided with a fast sec-' tion and a slow section, adapted to cause a turnin or skewing of the sheets of material while ing fedthrough the rollers, a first folder blade ositioned to initiate a cross fold in the first olded cut-ofi' section and to introduce a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller coacting with the central roller and consisting of fast and slow sections coacting with the fast and slow sections of the central roller, a second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and a third folder blade adapted to initiate a fold in the material delivered from the central and intermediate foldin rollers, and belts passing around certain o the rollers to assist in the feeding of the material, the coacting rollers of the roller pairs which serve to turn or skew the folded material being ribbed throughout confined areas to concentrate the compressive action along certain lines to facilitate the turning or skewing movements.

15. In a folding machine for folding sheets of material into cornucopia .form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded web, an upper rollerand a central roller in coacting relation, each of said rollers being provided with a fast section and a slow section, adapted to cause a turnin or skewing of the sheets of material whileieing fed through the rollers, a first folder blade positioned to initiate a cross-fold in the first folded cut-off section and to introduce a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller coactin with the central roller and consisting of ast and slow sections coacting with x the fast and slow sections of the central roller, a second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediatefolding rollers, a lower folding roller coacting with the central folding roller,

and a third folder blade adapted to initiate a fold in the material delivered from the central and intermediate folding rollers, an obliquely disposed gauge bar for positioning the material in obliquely disposed relation after passage between the'upper and central rollers, and an obliquely disposed gauge bar for positioning the fed material after passage between the central and intermediatev rollers.

16. In a folding machine for folding sheetsof material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded web, an upper roller and a central roller in coacting relation, each of said rollers being provided with a fast section and a slow section, adapted to cause a turning or skewing of the sheets of material while being fed through the rollers, a first roller blade positioned to initiate a cross fold in the first folded cut-off section and to introduce a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller co-acting with the central roller and consisting of fast and slow sections coacting with the fast and slow sections of the central roller, a second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and a third folder blade adapted to initiate a fold in the material delivered from the central and intermediate folding rollers, and belts passing around certain of the rollers to assist in the feeding of the material, an obliquely disposed gauge bar for positioning the material in obliquely disposed relation after passage between the upper and central rollers, and an obliquely disposed gauge bar for positioning the fed material after passage between the central and intermediate rollers. r a

17. In a folding machine for folding sheets of material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from while being fed through the rollers, a first folder blade positioned to initiate a cross fold in the first folded cut-off section and to introduce-a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller coactin withthe centralrollerand consistingoffastand slow sections coacting with the fast and slow sections of the central roller, a second folding blade adapted to initiate an obliquely directed fold in the four-ply folded material delivered through the first set of rollers, and to introduce the material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and a third folder blade adapted toinitiate 'a'fold in the material delivered from "the central and intermediate folding rollers, the coacting surfaces of the roller pairs which serve to turn or skew the folded material being ribbed throughout con-v fined areas to concentrate the compressive acblade adapted to initiate an obliquely directed a fold in the four-ply folded material delivered throu h the first set of rollers, and to introduce tie material thus folded between the central and intermediate folding rollers, a lower folding roller coacting with the central folding roller, and .a third folder blade adapted to lnitiate a fold in the material delivered from the central and intermediate foldin rollersi and belts passing around certain o the rol ers to assist in the feeding of the material, the coacting rollers of the roller pairs which serve'to turn or skew the folded material being ribbed throughout confined areas to concentrate the compressive action along certain lines to facilitate the turning or skewing movements, an obliquely disposed gauge bar for positioning the material in obliquely disposed relation after passage between the upper and central rollers, and an obli uely disposed auge bar for positioning the ed material a er passage between the central and intermediate rollers.

In witness that I claim the foregoing I tion along certain lines to facilitate the turning or skewing movements, an obliquely disosed gauge bar for positioning the material 1n obliquely disposed relation after passage between the upper and central rollers, and an obliquely disposed gauge bar for'positioning the fed material after passage between the.

central and intermediate rollers.

18. In a folding machine for folding sheets of material into cornucopia form, means for first longitudinally folding a continuous web of material, means for cutting sections from the first folded web, an upper roller and a central roller in coacting relation, each of said rollers being provided with a fast section and a slow section, adapted to cause a turning or skewing of the sheets of material while being fed through the rollers, a first folder blade positioned to intiate a cross fold in the first folded cut-oil section and to introduce a sheet in four-ply folded condition between the upper and central folding rollers, an intermediate folding roller coacting with the central roller and consisting of fast and slow sections coacting with the fast and slow sections of the central roller, a second folding 

